Crossword puzzle clue "''billion year spree'' author brian"

Here are the possible solutions for ''billion year spree'' author brian clue

Answer
Clue
Relevancy
aldiss
Clue
''Billion Year Spree'' author Brian
caan
Clue
Brian in "Brian's Song"
aeon
Clue
Billion-year period
Definition
the largest division of geological time, composed of several eras, also EON
eon
Clue
Billion-year stretch
Billion-year span
Billion-year period
Billion-year time period
Billion-year time span
Definition
a long period of time, also AEON

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